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| One-step synthesis of FeOOH/black phosphorus nano-composite:Synergistic achieving system's excellent oxygen evolution property |
| Author Name | Affiliation | E-mail | | ZHU Ya-Bo | School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China | zhuyabo@163.com | | HUA Cheng-Ye | School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China | | | XIE Ting-Ting | School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China | | | WANG Guang-Lan | School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China | | | FENG Pei-Zhong | School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China | |
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| Abstract: In the study, by hydrothermal method, FeOOH nano-materials were grown on the surface of black phosphorus (BP) nanosheets to prepare FeOOH/BP composite. As an oxygen evolution reaction (OER) electrocatalyst, its overpotential was only 191 mV at the current density of 20 mA·cm-2, with a Tafel slope of 49.9 mV·dec-1. After 1 000 cycles, its overpotential only increased by 3 mV, showing the best stability. FeOOH was loaded on the BP surface, which can hinder BP oxidation and enhance its carrier conduction ability. And the loaded nano-FeOOH had a small scale and a weak crystalline nature, which is conducive to enriching their active site and increasing the active area. The synergy of this binary system is the main reason for the OER performance improvement. By comparison, it was found that the active area of FeOOH/BP reached 26.9 mF·cm-2, which was 2.3 times that of pure FeOOH (11.8 mF·cm-2) and 1.6 times that of pure BP nanosheets (16.8 mF·cm-2). The excellent activity of this composite material is not only attributed to the morphology change of FeOOH, which significantly expands its effective active area but also benefits from the encapsulated BP, which has better dispersion and stronger conductivity. |
| Keywords: black phosphorus FeOOH compound oxygen evolution reaction electrocatalytic mechanism |
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| ZHU Ya-Bo,HUA Cheng-Ye,XIE Ting-Ting,WANG Guang-Lan,FENG Pei-Zhong.One-step synthesis of FeOOH/black phosphorus nano-composite:Synergistic achieving system's excellent oxygen evolution property[J].Chinese Journal of Inorganic Chemistry,2023,39(6):1103-1112. |
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